CN108098985A - A kind of pretensioned prestressed concrete pipe pile technique - Google Patents
A kind of pretensioned prestressed concrete pipe pile technique Download PDFInfo
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- CN108098985A CN108098985A CN201711245856.5A CN201711245856A CN108098985A CN 108098985 A CN108098985 A CN 108098985A CN 201711245856 A CN201711245856 A CN 201711245856A CN 108098985 A CN108098985 A CN 108098985A
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- prestressed concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/90—Methods or apparatus for demoulding or discharging after shaping
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of pretensioned prestressed concrete pipe pile techniques, include the following steps：It prepares mixed mud, prepare steel reinforcement cage, cast and the maintenance demoulding；Of the invention while obtained pile pile has intensity height, good fluidity, water-retaining property is excellent and the advantages that effect of anti-cracking is splendid, the present invention also has preferable anti-aging effect simultaneously, the advantages that adhesive property is excellent, wherein pipe pile reinforcing bar cage, it concrete can will not flow out during pile pile pours into a mould concrete, pile pile is made to be connected with steel reinforcement cage simultaneously more firm, the free moisture in the vaccum suction pipe vacuumed away concrete in aerated capsule is utilized in cast, significantly reduce the ratio of mud of concrete in pile for prestressed pipe, improve concrete strength and compactness, and use steam pool steam protecting method in maintenance, it is gentle using conventional vapor pond, the characteristics of free of extraneous thermal effects, reduce the task difficulty of steam curing process, so as to ensure that the qualification rate of pile pile.
Description
Technical field
The present invention relates to string technology fields, are specially a kind of pretensioned prestressed concrete pipe pile technique.
Background technology
Pile pile is divided into post-tensioned prestressing stake and pretensioned-prestressed tube pile, prestressed concrete pipe pile（PC pile piles）With
Thin tubular piles produced by prestressed concrete（PTC pile piles）And high strength prestressed concrete pipe pile（PHC pile piles).Pretensioned prestressing pipe
Stake is to use a kind of hollow cylinder elongate concrete prefabricated components made of pretensioned prestressing technique and centrifugal casting, mainly
It is made of cylindrical shape pile body, end plate and steel hoop etc..
It is thin that pile pile by strength grade of concrete and wall thickness is divided into prestressed concrete pipe pile (PC pile piles), prestressed concrete
Wall pile pile（PTC pile piles）With prestressed high-strength concrete pile (PHC pile piles).The concrete strength of PC must not be less than C50 concretes,
PTC pile piles strength grade must not be less than C60, and the strength grade of concrete of PHC must not be less than C80.PC and PTC are generally adopted
With atmospheric steam curing, generally to pass through 28 days could injection.And PHC, it is steam-cured into autoclave after the demoulding, it is big through 10
The steam press maintenance of air pressure, 180 degree or so, strength grade of concrete only need three, four up to C80 from being molded into shortest time for using
My god.And existing prestressed concrete pipe pile starts to be widely used in Railway System, and it is expanded to industry and civil buildings, city
The fields such as political affairs, metallurgy, harbour, highway.At present, but there is certain shortcoming to the preparation process of concrete tubular pile in the market,
If intensity is low, poor fluidity, poor water retention property and effect of anti-cracking are bad, anti-aging effect and adhesive property are also poor, are poured in pile pile
Concrete can flow out during note concrete and the task difficulty of steam curing process is larger, so as to reduce pile pile
Qualification rate.
So how to design a kind of pretensioned prestressed concrete pipe pile technique, becoming us will currently solve the problems, such as.
The content of the invention
The present invention provides a kind of pretensioned prestressed concrete pipe pile technique, while pile pile is made with intensity height, flowing
Property it is good, water-retaining property is excellent and effect of anti-cracking is splendid the advantages that, while the present invention also have preferable anti-aging effect, adhesive property
The advantages that excellent, wherein pipe pile reinforcing bar cage, concrete can will not flow out during pile pile pours into a mould concrete, while make pipe
Stake is connected with steel reinforcement cage more to be consolidated, and is utilized in cast free in the vaccum suction pipe vacuumed away concrete in aerated capsule
Moisture significantly reduces the ratio of mud of concrete in pile for prestressed pipe, improves concrete strength and compactness and is supporting
Using steam pool steam protecting method during shield, using conventional vapor pond it is gentle, free of extraneous thermal effects the characteristics of, reduce
The task difficulty of steam curing process so as to ensure that the qualification rate of pile pile, can effectively solve asking in above-mentioned background technology
Topic.
To achieve the above object, the present invention provides following technical solution：A kind of pretensioned prestressed concrete pipe pile technique,
Include the following steps：
1）Prepare mixed mud：Mixed material is first made in the grains of sand, aluminous cement, flyash and aluminum sulfate after mixing；It will
After polyacrylamide and redispersable latex powder dissolving, mixed solution is made after mixing with water；Mixed solution is added to
In mixed material, cement mortar is made after being stirred evenly by mixer；According still further to 1：0.9-1.2：The ratio of 0.1-0.2 is by water
Cement mortar, stone, alkali resistant glass fiber, which are uniformly mixed, can be made into pile pile mixed mud；
2）Prepare steel reinforcement cage：The reinforcing bar encompasses disk, is uniformly connected to the reinforcing bar group of disk one side, is wrapped in reinforcing bar group simultaneously
And be fixedly connected with reinforcing bar group tie hoop, be enclosed in disk and the steel wire of reinforcing bar group bottom, reinforcing bar group includes several length
Identical reinforcing bar is spent, the edge of steel wire is connected with the reinforcing bar of reinforcing bar group by iron wire winding, and the quantity of reinforcing bar is in reinforcing bar group
5-8, the aperture of steel wire is 10mm；
3）Cast：Two semicircles are poured to spelling the post-tensioned prestressing pile pile tube coupling in template using common tubing string centrifugation apparatus
Type is made in rotation；According to the internal diameter size of post-tensioned prestressing pile pile tube coupling, an aerated capsule for carrying vaccum suction pipe is made；By shell-like
Vacuum filter cloth cover is on the outer wall of aerated capsule；After the aerated capsule of unaerated is put into completion centrifugal rotary together with vacuum filter cloth
In tension prestress pile pile tube coupling inner cavity, vaccum suction pipe exposed junction is connected with vacuum pump；Aerated capsule passes through inflation after being in place
Pipe is filled with low-pressure compressed air；At the same time, start vacuum pump, post-tensioned prestressing pile pile tube coupling coagulation is absorbed by vaccum suction pipe
Free moisture in soil；Vacuum pump vacuum degree reaches after 80KPa pressurize 10 minutes or more, closes vacuum pump, releases aerated capsule
Aerated capsule is pulled out after interior compressed air, you can；
4）The maintenance demoulding：By post-tensioned prestressing pile pile tube coupling together with to spell template send to maintenance be specially put it into steam pond
2h is stood, cellar for storing things temperature control system is at 5-20 °C；Then with raise per hour 12 °C of speed carry out heating 2 it is small when, pond temperature control system is not
More than 45 °C；Maintain the temperature at 20-35 °C, when retention time 6-8 is small；Cooling：It is dropped with the speed for reducing by 5 °C per hour
Temperature, when cooling 1-3 is small after conserve and terminates, demoulded after going out pond.
According to above-mentioned technical proposal, the grains of sand, aluminous cement, aluminum sulfate, polyacrylamide, can divide flyash again
Dissipate latex powder, stone and alkali resistant glass fiber mass parts be respectively：10-20 parts of the grains of sand, 20-30 parts of aluminous cement, fine coal
10-20 parts grey, 5-10 parts of aluminum sulfate, 5-10 parts of polyacrylamide, 10-20 parts of redispersable latex powder, 20-30 parts of stone and anti-
5-10 parts of alkali containing glass fibre.
According to above-mentioned technical proposal, the redispersable latex powder is selected from vinylacetate and ethylene copolymer rubber powder, ethylene
With vinyl chloride and moon silicic acid vinyl acetate ternary polymerization rubber powder, vinylacetate and ethylene and higher aliphatic vinyl acetate ternary polymerization
Rubber powder, vinylacetate and higher aliphatic vinyl acetate copolymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate
With acrylate and higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate homopolymerization rubber powder.
According to above-mentioned technical proposal, the preparation method of the alkali resistant glass fiber is by broken wollastonite, silica, oxygen
Change the mixtures such as aluminium, magnesia and boric acid by being melting into glass, then pull into glass fibre, wherein wollastonite 55-70 parts,
0-18 parts of silica, 5-15 parts of aluminium oxide, 5-10 parts of magnesia, 0-10 parts of boric acid, and glass smelting temperature should control
1350-1400 DEG C, fiber drawing temperature is controlled at 1200-1300 DEG C.
According to above-mentioned technical proposal, the step 3）Air pressure reaches 0.35-0.40MPa in middle aerated capsule.
According to above-mentioned technical proposal, the preparation method of the aluminous cement is by matching somebody with somebody by calcium carbonate, aluminium powder and aluminium oxide
It is more dry-pressing formed than after mixing to obtain sample, by detonator sample is triggered to carry out SHS process reaction, the examination after reaction
Sample, which crushes, to be ground up to aluminous cement.
According to above-mentioned technical proposal, the step 4）The middle demoulding is specially first by the matchboard in whole root canal pile entirety punching block
On Bolt dismantling get off, hang away the upper mold in punching block；Several demoulding turning rolls are installed, it is each to demould in turning rolls and lower die
Running wheel it is corresponding；Pile pile and lower die are rotated, makes lower die upward, pile pile is supported on demoulding turning rolls；Lower die and the demoulding are rolled
Wheel carrier separates, and hangs away lower die；Finally whole root canal pile is hung to stockyard.
Compared with prior art, beneficial effects of the present invention：Pile pile is made simultaneously has intensity height, good fluidity, water conservation
Property excellent and effect of anti-cracking it is splendid the advantages that, while the present invention also has preferable anti-aging effect, and adhesive property is excellent etc. excellent
Point, wherein pipe pile reinforcing bar cage concrete can will not flow out during pile pile pours into a mould concrete, while make pile pile and reinforcing bar
Cage connection is more firm, in cast using the free moisture in the vaccum suction pipe vacuumed away concrete in aerated capsule, has
The ratio of mud of concrete in pile for prestressed pipe is reduced to effect, improve concrete strength and compactness and is adopted in maintenance
With steam pool steam protecting method, using conventional vapor pond it is gentle, free of extraneous thermal effects the characteristics of, reduce steam and support
The task difficulty of nurse's skill, so as to ensure that the qualification rate of pile pile.
Description of the drawings
Attached drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Example is applied together for explaining the present invention, is not construed as limiting the invention.
In the accompanying drawings：
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that preferred reality described herein
It applies example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment：As shown in Figure 1, the present invention provides a kind of pretensioned prestressed concrete pipe pile technique, including walking as follows
Suddenly：
1）Prepare mixed mud：Mixed material is first made in the grains of sand, aluminous cement, flyash and aluminum sulfate after mixing；It will
After polyacrylamide and redispersable latex powder dissolving, mixed solution is made after mixing with water；Mixed solution is added to
In mixed material, cement mortar is made after being stirred evenly by mixer；According still further to 1：0.9-1.2：The ratio of 0.1-0.2 is by water
Cement mortar, stone, alkali resistant glass fiber, which are uniformly mixed, can be made into pile pile mixed mud；
2）Prepare steel reinforcement cage：The reinforcing bar encompasses disk, is uniformly connected to the reinforcing bar group of disk one side, is wrapped in reinforcing bar group simultaneously
And be fixedly connected with reinforcing bar group tie hoop, be enclosed in disk and the steel wire of reinforcing bar group bottom, reinforcing bar group includes several length
Identical reinforcing bar is spent, the edge of steel wire is connected with the reinforcing bar of reinforcing bar group by iron wire winding, and the quantity of reinforcing bar is in reinforcing bar group
5-8, the aperture of steel wire is 10mm；
3）Cast：Two semicircles are poured to spelling the post-tensioned prestressing pile pile tube coupling in template using common tubing string centrifugation apparatus
Type is made in rotation；According to the internal diameter size of post-tensioned prestressing pile pile tube coupling, an aerated capsule for carrying vaccum suction pipe is made；By shell-like
Vacuum filter cloth cover is on the outer wall of aerated capsule；After the aerated capsule of unaerated is put into completion centrifugal rotary together with vacuum filter cloth
In tension prestress pile pile tube coupling inner cavity, vaccum suction pipe exposed junction is connected with vacuum pump；Aerated capsule passes through inflation after being in place
Pipe is filled with low-pressure compressed air；At the same time, start vacuum pump, post-tensioned prestressing pile pile tube coupling coagulation is absorbed by vaccum suction pipe
Free moisture in soil；Vacuum pump vacuum degree reaches after 80KPa pressurize 10 minutes or more, closes vacuum pump, releases aerated capsule
Aerated capsule is pulled out after interior compressed air, you can；
4）The maintenance demoulding：By post-tensioned prestressing pile pile tube coupling together with to spell template send to maintenance be specially put it into steam pond
2h is stood, cellar for storing things temperature control system is at 5-20 °C；Then with raise per hour 12 °C of speed carry out heating 2 it is small when, pond temperature control system is not
More than 45 °C；Maintain the temperature at 20-35 °C, when retention time 6-8 is small；Cooling：It is dropped with the speed for reducing by 5 °C per hour
Temperature, when cooling 1-3 is small after conserve and terminates, demoulded after going out pond.
According to above-mentioned technical proposal, the grains of sand, aluminous cement, aluminum sulfate, polyacrylamide, can divide flyash again
Dissipate latex powder, stone and alkali resistant glass fiber mass parts be respectively：10-20 parts of the grains of sand, 20-30 parts of aluminous cement, fine coal
10-20 parts grey, 5-10 parts of aluminum sulfate, 5-10 parts of polyacrylamide, 10-20 parts of redispersable latex powder, 20-30 parts of stone and anti-
5-10 parts of alkali containing glass fibre.
According to above-mentioned technical proposal, the redispersable latex powder is selected from vinylacetate and ethylene copolymer rubber powder, ethylene
With vinyl chloride and moon silicic acid vinyl acetate ternary polymerization rubber powder, vinylacetate and ethylene and higher aliphatic vinyl acetate ternary polymerization
Rubber powder, vinylacetate and higher aliphatic vinyl acetate copolymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate
With acrylate and higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate homopolymerization rubber powder.
According to above-mentioned technical proposal, the preparation method of the alkali resistant glass fiber is by broken wollastonite, silica, oxygen
Change the mixtures such as aluminium, magnesia and boric acid by being melting into glass, then pull into glass fibre, wherein wollastonite 55-70 parts,
0-18 parts of silica, 5-15 parts of aluminium oxide, 5-10 parts of magnesia, 0-10 parts of boric acid, and glass smelting temperature should control
1350-1400 DEG C, fiber drawing temperature is controlled at 1200-1300 DEG C.
According to above-mentioned technical proposal, the step 3）Air pressure reaches 0.35-0.40MPa in middle aerated capsule.
According to above-mentioned technical proposal, the preparation method of the aluminous cement is by matching somebody with somebody by calcium carbonate, aluminium powder and aluminium oxide
It is more dry-pressing formed than after mixing to obtain sample, by detonator sample is triggered to carry out SHS process reaction, the examination after reaction
Sample, which crushes, to be ground up to aluminous cement.
According to above-mentioned technical proposal, the step 4）The middle demoulding is specially first by the matchboard in whole root canal pile entirety punching block
On Bolt dismantling get off, hang away the upper mold in punching block；Several demoulding turning rolls are installed, it is each to demould in turning rolls and lower die
Running wheel it is corresponding；Pile pile and lower die are rotated, makes lower die upward, pile pile is supported on demoulding turning rolls；Lower die and the demoulding are rolled
Wheel carrier separates, and hangs away lower die；Finally whole root canal pile is hung to stockyard.
Based on above-mentioned, have intensity height, good fluidity, the water-retaining property excellent it is an advantage of the current invention that pile pile is made simultaneously
And effect of anti-cracking it is splendid the advantages that, while the present invention also there is preferable anti-aging effect, adhesive property is excellent, wherein
Pipe pile reinforcing bar cage concrete can will not flow out during pile pile pours into a mould concrete, while pile pile is made to be connected with steel reinforcement cage
It is more firm, in cast using the free moisture in the vaccum suction pipe vacuumed away concrete in aerated capsule, effectively drop
The ratio of mud of concrete in low pile for prestressed pipe improves concrete strength and compactness and in maintenance using steam
Pool steam protecting method, using conventional vapor pond it is gentle, free of extraneous thermal effects the characteristics of, reduce steam curing process
Task difficulty, so as to ensure that the qualification rate of pile pile.
Finally it should be noted that：The foregoing is merely the preferred embodiments of the present invention, are not intended to limit the invention, to the greatest extent
Pipe is with reference to the foregoing embodiments described in detail the present invention, still can be with for the technology patient of this field
It modifies to the technical solution recorded in foregoing embodiments or equivalent substitution is carried out to which part technical characteristic.It is all
Within the spirit and principles in the present invention, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the present invention
Within the scope of shield.
Claims (7)
1. a kind of pretensioned prestressed concrete pipe pile technique, it is characterised in that：Include the following steps：
1）Prepare mixed mud：Mixed material is first made in the grains of sand, aluminous cement, flyash and aluminum sulfate after mixing；It will
After polyacrylamide and redispersable latex powder dissolving, mixed solution is made after mixing with water；Mixed solution is added to
In mixed material, cement mortar is made after being stirred evenly by mixer；According still further to 1：0.9-1.2：The ratio of 0.1-0.2 is by water
Cement mortar, stone, alkali resistant glass fiber, which are uniformly mixed, can be made into pile pile mixed mud；
2）Prepare steel reinforcement cage：The reinforcing bar encompasses disk, is uniformly connected to the reinforcing bar group of disk one side, is wrapped in reinforcing bar group simultaneously
And be fixedly connected with reinforcing bar group tie hoop, be enclosed in disk and the steel wire of reinforcing bar group bottom, reinforcing bar group includes several length
Identical reinforcing bar is spent, the edge of steel wire is connected with the reinforcing bar of reinforcing bar group by iron wire winding, and the quantity of reinforcing bar is in reinforcing bar group
5-8, the aperture of steel wire is 10mm；
3）Cast：Two semicircles are poured to spelling the post-tensioned prestressing pile pile tube coupling in template using common tubing string centrifugation apparatus
Type is made in rotation；According to the internal diameter size of post-tensioned prestressing pile pile tube coupling, an aerated capsule for carrying vaccum suction pipe is made；By shell-like
Vacuum filter cloth cover is on the outer wall of aerated capsule；After the aerated capsule of unaerated is put into completion centrifugal rotary together with vacuum filter cloth
In tension prestress pile pile tube coupling inner cavity, vaccum suction pipe exposed junction is connected with vacuum pump；Aerated capsule passes through inflation after being in place
Pipe is filled with low-pressure compressed air；At the same time, start vacuum pump, post-tensioned prestressing pile pile tube coupling coagulation is absorbed by vaccum suction pipe
Free moisture in soil；Vacuum pump vacuum degree reaches after 80KPa pressurize 10 minutes or more, closes vacuum pump, releases aerated capsule
Aerated capsule is pulled out after interior compressed air, you can；
4）The maintenance demoulding：By post-tensioned prestressing pile pile tube coupling together with to spell template send to maintenance be specially put it into steam pond
2h is stood, cellar for storing things temperature control system is at 5-20 °C；Then with raise per hour 12 °C of speed carry out heating 2 it is small when, pond temperature control system is not
More than 45 °C；Maintain the temperature at 20-35 °C, when retention time 6-8 is small；Cooling：It is dropped with the speed for reducing by 5 °C per hour
Temperature, when cooling 1-3 is small after conserve and terminates, demoulded after going out pond.
2. a kind of pretensioned prestressed concrete pipe pile technique according to claim 1, it is characterised in that：The grains of sand,
Aluminous cement, flyash, aluminum sulfate, polyacrylamide, redispersable latex powder, the mass parts of stone and alkali resistant glass fiber
Respectively：10-20 parts of the grains of sand, 20-30 parts of aluminous cement, 10-20 parts of flyash, 5-10 parts of aluminum sulfate, polyacrylamide 5-
5-10 parts of 10 parts, 10-20 parts of redispersable latex powder, 20-30 parts of stone and alkali resistant glass fiber.
3. a kind of pretensioned prestressed concrete pipe pile technique according to claim 1, it is characterised in that：It is described to divide again
Dissipate latex powder be selected from vinylacetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and moon silicic acid vinyl acetate ternary polymerization rubber powder,
Vinylacetate is total to ethylene and higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate and higher aliphatic vinyl acetate
Poly- rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate and acrylate and higher aliphatic vinyl acetate ternary are total to
Poly- rubber powder, vinylacetate homopolymerization rubber powder.
4. a kind of pretensioned prestressed concrete pipe pile technique according to claim 1, it is characterised in that：The alkali resistant glass
The preparation method of glass fiber is by being melted by mixtures such as broken wollastonite, silica, aluminium oxide, magnesia and boric acid
Into glass, then pull into glass fibre, wherein wollastonite 55-70 parts, 0-18 parts of silica, 5-15 parts of aluminium oxide, magnesia
5-10 parts, 0-10 parts of boric acid, and glass smelting temperature should be controlled at 1350-1400 DEG C, fiber drawing temperature is controlled in 1200-
1300℃。
5. a kind of pretensioned prestressed concrete pipe pile technique according to claim 1, it is characterised in that：The step 3）
Air pressure reaches 0.35-0.40MPa in middle aerated capsule.
6. a kind of pretensioned prestressed concrete pipe pile technique according to claim 1, it is characterised in that：The calcium aluminate
The preparation method of cement is that calcium carbonate, aluminium powder and aluminium oxide are obtained sample by dry-pressing formed after proportioning mixing, passes through detonator
Sample is triggered to carry out SHS process reaction, the sample after reaction, which crushes, to be ground up to aluminous cement.
7. a kind of pretensioned prestressed concrete pipe pile technique according to claim 1, it is characterised in that：The step 4）
The middle demoulding is specially that first the Bolt dismantling on the matchboard in whole root canal pile entirety punching block gets off, and hangs away the upper mold in punching block；
Several demoulding turning rolls are installed, each demoulding turning rolls is corresponding with the running wheel in lower die；Pile pile and lower die are rotated, makes lower die
Upward, pile pile is supported on demoulding turning rolls；Lower die and demoulding turning rolls are separated, hang away lower die；Finally whole root canal pile is hung
To stockyard.
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| CN201711245856.5A CN108098985A (en) | 2017-12-01 | 2017-12-01 | A kind of pretensioned prestressed concrete pipe pile technique |
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| CN201711245856.5A CN108098985A (en) | 2017-12-01 | 2017-12-01 | A kind of pretensioned prestressed concrete pipe pile technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517721A (en) * | 2020-04-29 | 2020-08-11 | 安徽华奇管业有限公司 | Corrosion-resistant reinforced concrete pipe and preparation method thereof |
| CN111730735A (en) * | 2020-07-17 | 2020-10-02 | 曹银花 | Method for manufacturing prestressed high-strength concrete pipe pile |
| CN112430120A (en) * | 2020-11-21 | 2021-03-02 | 固始佳兴新型建材有限公司 | Concrete reinforced block and preparation method thereof |
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| CN105568960A (en) * | 2015-12-18 | 2016-05-11 | 国家电网公司 | Manufacturing method of tubular pile reinforcement cage |
| KR20170080361A (en) * | 2015-12-31 | 2017-07-10 | 주식회사 제일산기평동 | Fabrication apparatus of concrete pile |
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| CN87108257A (en) * | 1987-12-29 | 1988-08-17 | 武汉工业大学 | Method for making alkali-resisting glass fiber |
| CN101224603A (en) * | 2007-01-18 | 2008-07-23 | 中交三航局第三工程有限公司 | Demoulding method of 55mPHC tubular pile |
| CN103437342A (en) * | 2013-03-08 | 2013-12-11 | 中交二航局第三工程有限公司 | Prefabricating process of post-tensioned prestressing pipe pile joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517721A (en) * | 2020-04-29 | 2020-08-11 | 安徽华奇管业有限公司 | Corrosion-resistant reinforced concrete pipe and preparation method thereof |
| CN111730735A (en) * | 2020-07-17 | 2020-10-02 | 曹银花 | Method for manufacturing prestressed high-strength concrete pipe pile |
| CN111730735B (en) * | 2020-07-17 | 2021-09-14 | 江西中泰来混凝土管桩有限公司 | Method for manufacturing prestressed high-strength concrete pipe pile |
| CN112430120A (en) * | 2020-11-21 | 2021-03-02 | 固始佳兴新型建材有限公司 | Concrete reinforced block and preparation method thereof |
| CN112430120B (en) * | 2020-11-21 | 2022-10-14 | 固始佳兴新型建材有限公司 | Concrete reinforced block and preparation method thereof |
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Address after: 350314 Yuanhong investment zone, Fuzhou City, Fujian Province Applicant after: Fujian Hongsheng Material Technology Co.,Ltd. Address before: 350314 Yuanhong investment zone, Fuzhou City, Fujian Province Applicant before: FUZHOU HONG SHENG BUILDING MATERIAL Co.,Ltd. |
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Application publication date: 20180601 |